Martin

What is a torque converter?

That is really what the torque converter and how it works.

Posted in Tech, asked by Martin, 5 years ago. 883 hits.

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A manual transmission uses a clutch whereas an automatic uses a torque converter. Its job is the same: to allow the engine’s flywheel to rotate when the gearbox doesn’t have to, such as when the car is stationary. Again, it’s a fairly complex piece of engineering but it essentially works using a basic principle: centrifugal force. The torque converter’s housing is bolted directly to the engine’s flywheel so that it rotates in relation to engine speed and inside it’s filled with transmission fluid. As it spins, the fluid is thrown to the outside of the housing and forced into a set of fins that act as a pump, pushing the fluid back towards the centre of the torque converter. Located in the centre is a turbine, which is connected directly to the gearbox and acts as the output. As the fluid passes through the turbine its direction is changed in order to absorb the energy and it begins to rotate, sending that movement along into the gearbox. The faster the engine speed the more fluid passes through the turbine, creating more output. A device called a stator, housed between the turbine and pump, then directs fluid from the turbine and back into the pump so the cycle can begin again.

Bob Harper
5 years ago
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